recommended free port scan utility

[lagigolo]

I need to reset a terminal server remotely, but can't always get in on 3000 (standard used), didn't know if there was any other ports i could try and come in on instead of having to go and manually reboot it. Or suggestions.

[polo-g40]

WhatupGold is a good free trial application that does all sorts.. SNMP, Portscans etc...

I'd write one for fun though if I was bored and wanted to learn something..
I've Used c#, Using System.Net.Sockets & ..Sockets.SocketInformation to do many similar tasks... (I've made a few SMTP servers & RDP Relays, Syslog servers nd all sorts)

The easiest is to code it the Async way. You can run a for loop and make a new socket do a BeginConnect to each port in the scan and it will call the place you tell the .begin to go when it knows the answer (connected or not). It returns the socket object when it does, and thats where you can check the .Connected to see if it's there... If it is, use .read to send data and use .read to see what it's sending you back...

Useless probably but I will always extol the virtues of programming and c#..

Neal

[lagigolo]

Although it would be a great project, i can't justify anytime to learn and write one at the moment.

Sorted: now i have to enter an ip-range or a list of ip's i want it too scan.

What ones should i be searching for???

[psxcity]

just goggle "shields up"

[JonEp]

Nmap

nmap.org

[Over Carl]

I used Superscan 4.0 recently, but to get it to work I had to play with the settings and testing against a pc I knew what to expect with.

[unclex]

Agree SuperScan or Nmap for the more advanced.

[c0axial]

scan500.exe / scan1000.exe

[polo-g40]

Want the code for a simple scanner?
Neal

[c0axial]

Want the code for a simple scanner?
Neal

TELNET IP PORT !